Unit Conversion mol/kg to mmol/g

Chemistry and homework help forum.

Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.

Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!

Please feel free to start a scientific chemistry discussion here!

Discuss chemistry homework problems with experts!

Ask for help with chemical questions and help others with your chemistry knowledge!

Moderators: expert, ChenBeier, Xen

Post Reply
cheme209
Jr. Member
Jr. Member
Posts: 5
Joined: Thu Jun 24, 2021 3:59 pm

Unit Conversion mol/kg to mmol/g

Post by cheme209 »

Hey!

Would someone be able to show me how to do the unit conversion for 1.5 mol/kg to mmol/g and mg/g?

Thank you so much!
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

1,5 mol/ kg = 1,5 mol/1000g = 0,0015 mol/ g = 1,5 mmol/g The number doesnt change.
For mg/g we need molar mass , without its impossible to calculate.
cheme209
Jr. Member
Jr. Member
Posts: 5
Joined: Thu Jun 24, 2021 3:59 pm

Re: Unit Conversion mol/kg to mmol/g

Post by cheme209 »

For mg/g the molar mass is 44.01

Also, how would I be able to convert 3.7 mmol/L to mmol/g?

Thanks for your help!
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

44.01 Apples or what. Need correct unit. Then can use m = n* M
For converting L to g need specific gravity.
Orcio_Dojek
Jr. Member
Jr. Member
Posts: 7
Joined: Sun Jun 20, 2021 7:55 am

Re: Unit Conversion mol/kg to mmol/g

Post by Orcio_Dojek »

3.7 mmol/L is very diluted solution, so gravity is not distinct from 1 g / ml.
cheme209
Jr. Member
Jr. Member
Posts: 5
Joined: Thu Jun 24, 2021 3:59 pm

Re: Unit Conversion mol/kg to mmol/g

Post by cheme209 »

The molar mass is 44.01 g/mol

The specific gravity is for CO2 so 1.5189
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

You need the specific gravity of the solution not from CO2. As already mentioned you can say 1 kg ~1 L but this is inaccurate.
Orcio_Dojek
Jr. Member
Jr. Member
Posts: 7
Joined: Sun Jun 20, 2021 7:55 am

Re: Unit Conversion mol/kg to mmol/g

Post by Orcio_Dojek »

@cheme209

3,7 mmol / l = 0,0037 mmol / g = 0,163 mg / g
cheme209
Jr. Member
Jr. Member
Posts: 5
Joined: Thu Jun 24, 2021 3:59 pm

Re: Unit Conversion mol/kg to mmol/g

Post by cheme209 »

1.3 M NaOH solution in water
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

What is the question with it.
cheme209
Jr. Member
Jr. Member
Posts: 5
Joined: Thu Jun 24, 2021 3:59 pm

Re: Unit Conversion mol/kg to mmol/g

Post by cheme209 »

3.7 mmol/L of CO2 in 1.3 M NaOH solution

convert 3.7 mmol/L to mmol/g
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

If CO2 will dissolved in NaOH solution, then it will be converted to sodiumcarbonate.
There is no free carbondioxide left.
1,3 m NaOH has specific gravity of 1,05 g/ml
With this number you could calculate further but its hypothetic.
Warner Mortensen
Full Member
Full Member
Posts: 18
Joined: Mon Jul 26, 2021 4:13 am

Re: Unit Conversion mol/kg to mmol/g

Post by Warner Mortensen »

I tried and here i am with the solution (let me know this is right or not?)
1 g / mol = 0.001 kg / mol
I mol / kg = 1 mm / g
The conversion will now be pretty simple.
1.5 mol / kg = 1.5 mol / 1000g = 0.0015 mol / g = 1.5 mmol / g
Mg / g is impossible to calculate without the molar mass.
The value of 1.5 does not change for the rest.
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 916
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Unit Conversion mol/kg to mmol/g

Post by ChenBeier »

I answered already in my first post. Why do you copy this again.
Warner Mortensen
Full Member
Full Member
Posts: 18
Joined: Mon Jul 26, 2021 4:13 am

Re: Unit Conversion mol/kg to mmol/g

Post by Warner Mortensen »

I missed it. Sorry
Post Reply